Download Physical Science (Types of Potential Energy)

Physical Science (Types of Potential Energy)
Grade 8 Science
Grade 8 Science
Start Date: March 31, 2014
End Date : April 18, 2014
Unit Overview
This topic focuses on forces and motion within,
on and around the Earth and within the
universe.
Content Elaborations
Unit Resources
Gravitational potential energy is associated with the mass of an object and its height above a
Textbook:
9 in the height of an
reference point (e.g., above ground level, above floor
level).Chapter
A change
Potential Energy on Shelves
object is evidence that the gravitational potential Gizmo
energy Lab:
has changed.
Lab Activity: Elastic Energy Lab
Gizmo
Energy
Pendulum
Elastic potential energy is associated with how much
an Lab:
elastic
object of
hasa been
stretched or
compressed and how difficult such a compression or stretch is. A change in the amount of
compression or stretch of an elastic object is evidence that the elastic potential energy has
changed.
Chemical potential energy is associated with the position and arrangement of the atoms
within substances. Rearranging atoms into new positions to form new substances (chemical
reaction) is evidence that the chemical potential energy has most likely changed. The energy
transferred when a chemical system undergoes a reaction is often thermal energy.
Electrical potential energy is associated with the position of electrically charged objects relative to each other and the
amount of charge they have. A change in the position of charged particles relative to each other is evidence of a change in
electrical potential energy.
Unit Vocabulary
Energy
Kinetic Energy
Potential Energy
Mechanical Energy
Chemical Energy
Elastic Energy
Electrical Energy
Mechanical Energy
Energy Conversion
Enduring Understandings (Big Ideas)
There are different types of potential
energy.
Gravitational potential energy changes in a
system as the masses or relative positions of
objects are changed.
Objects can have elastic potential energy due
Physical Science (Types of Potential Energy) - Page 1 of 3
Connections
Physical Science (Types of Potential Energy)
Grade 8 Science
Grade 8 Science
Start Date: March 31, 2014
End Date : April 18, 2014
Friction
Law of Conservation of Energy
to their compression or chemical potential
energy due to the nature and arrangement of
the atoms that make up the object.
Standards
OH_Academic_Content_Standards - Science (2011) - Grade 8
Strand PS Physical Science
Topic PS.1 This topic focuses on forces and motion within, on and around the Earth and within the universe.
Content Statement PS.1.3 There are different types of potential energy.
PS.1.3.a Gravitational potential energy changes in a system as the masses or relative positions of objects are changed.
PS.1.3.b Objects can have elastic potential energy due to their compression or chemical potential energy due to the nature and arrangement of the atoms that make up the object.
Student Assessment
Unit Refection
Chapter 9 Test
Study Island Assessments
Gizmo Assessments
Potential Energy Types
Content
A. Potential Energy Types
Skills
A. Potential Energy Types
1. Compare kinetic and potential energy
2. Desribe the different forms of energy
3. Explain the relationship between energy and work
4. Describe an energy conversion
5. Give examples of energy conversions for the different
forms of energy
6. Explain how energy conversions make energy useful
7. Explain the role of machines in energy conversions
8. Explain how energy is conserved within a closed
system
9. Explain the law of conservation of energy
Physical Science (Types of Potential Energy) - Page 2 of 3
Assessment
Physical Science (Types of Potential Energy)
Grade 8 Science
Grade 8 Science
Start Date: March 31, 2014
End Date : April 18, 2014
10. Give examples of how thermal energy is always a
result of energy conversion
11. Explain why perpetual motion is impossible
Physical Science (Types of Potential Energy) - Page 3 of 3